As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BMI - FLT 4374 - AIRCRAFT DIVERTED TO BMI AFTER SEVERAL INTERMITTENT MALFUNCTION INDICATIONS OCCURRED. THE EMERGENCY BATTERY CHARGE FAULT GEAR PANEL LIGHTS CYCLING ALONG WITH NR 2 ENGINE MOMENTARY SURGE. REPLACED NR 2 MFC IAW ATR JIC 31-48-81. PERFORMED OPERATIONAL CHECK SATISFACTORILY. RETURNED AIRCRAFT TO SERVICE. (X)